TROUBLESHOOTING GUIDE
Symptom | Possible Cause |
| Action |
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Display does not come | Thermostat is not being |
| Check if the thermostat is mounted and latched on the |
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on. | powered. |
| wallplateÑmount and latch the thermostat on the |
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| wallplate. |
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| Check if the circuit breaker is trippedÑreset the circuit |
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| breaker. |
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| Check if the fuse is blownÑreplace the fuse. |
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| Check if the system switch at the equipment is in the Off | |
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| positionÑset to the On position. |
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| Check wiring between thermostat and HVAC equipmentÑ | |
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| replace any broken wires. |
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| If 24 Vac is present, proceed with troubleshooting. |
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Temperature setting | The upper or lower temperature |
| Check that the temperature setpoints are: |
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does not change | limits were reached. |
| Heating: 55 to 85°F (13 to 29°C) |
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(Example: cannot set the |
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| Cooling: 65 to 99°F (18 to 37°C). |
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heating higher or the |
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cooling lower). |
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| (continued) | |
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| Pub. No. | |
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| 60 | ||
